Park, Jeong-Hyun Choi, Young-Jin Nahm, Sahn Park, Jae-Gwan 2024-01-20T17:00:39Z 2024-01-20T17:00:39Z 2021-09-04 2011-06-16 0925-8388 https://pubs.kist.re.kr/handle/201004/130257 The crystal structure and microwave dielectric properties of ZnTi(Nb1-xTax)(2)O-8 (0 <= x <= 1) ceramics sintered at 1200 degrees C for 2 h were investigated. For x<0.5, solid solution phases with the alpha-PbO2 structure, typical of ZnTiNb2O8, were obtained, whereas for 0.5 <= x<1, mixtures of two solid solutions each respectively based on the alpha-PbO2 structure and a trirutile structure, were obtained. The relative amount of the trirutile-structured phases increased as the Ta content increased in a given region, and the end member ZnTiTa2O8 formed a single phase with the trirutile structure. The microwave dielectric properties were closely related to the crystal structures. A material with a near zero temperature coefficient of resonant frequency could be obtained for x=0.8, and its dielectric constant and quality factor (Qxf) were 40.5 and 41,000 GHz, respectively. (C) 2011 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE SA PHASE-RELATIONS NINB2-XTAXO6 TI Crystal structure and microwave dielectric properties of ZnTi(Nb1-xTax)(2)O-8 ceramics Article 10.1016/j.jallcom.2011.03.178 1 JOURNAL OF ALLOYS AND COMPOUNDS, v.509, no.24, pp.6908 - 6912 JOURNAL OF ALLOYS AND COMPOUNDS 509 24 6908 6912 scie scopus 000290793000040 2-s2.0-79956212594 Chemistry, Physical Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Chemistry Materials Science Metallurgy & Metallurgical Engineering Article PHASE-RELATIONS NINB2-XTAXO6 TI Ceramics Crystal structure X-ray diffraction TEM